Turning-lathe.



No. 828,897. PATENTED AUG. 21, 1908. 1". NBIIDORPP.

TURNING LATHE. APPLICATION FILED AUG.2, 1905.

X s sums-48mm 1.

Allamey TNI MI: min: 60., 'llllmfll, D. c.

PATENTED AUG. 21, 1906, "P. INEUDORFF. TURNING LATHE.

APPLICATION FILED AUGJI, 1905 -a sums-$111221 z.

PATENTBD AUGJZI, 1906.

. P. NEUDORFF, TURNING LATHE.

APPLICATION FILED AUG. 2. 1905.

3 SBEET$-BHEET 3.

INVENTOR &

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YUNTTED" STATES PATENT option.

FREDRICICNEUDORFF, OF SHEFFIELD. ALABAMA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO MEMPHIS COLUMN COMPANY, OF MEMPHIS, TEN- V NESSEE, A CORPORATION OF MICHIGAN.

TURNING-LATHE.

Specification of Letters Patent.

Patented Aug. 21, 906.

Application filed August 2, 1905. Serial No. 272,367.

useful Improvements in Turning-Lathes, of

which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a turning-lathe,

and particularly to a structure suitable for producing columns and other wooden objects having a circular configuration.

The invention has for an ob ect to improve the construction and arrangement of the parts whereby the object to be turned-shall travel laterally of a relatively fixed cutter, both of said parts being rotated during said movement, and means provided whereby the travel of the work-holder is automatically reversed atits opposite extremes.

A further object of the invention is to provide a novel and improved construction of back cutter-knife adapted to reciprocate:

upon the standards of the machine and also to carry upon its frame cut-off saws adapted to trim the opposite ends of the object turned.

A further object is to provide an-improved construction and arrangement of the driving-gears for the several parts thereof by 'which they may be controlled from a single point in order to stop and start the same or reverse the direction of drive.

Further objects and advantages of the invention will be hereinafter set forth, and the novel features thereof defined by the appended claims.

In the drawings, Figure 1. is a front eleva tion of the machine with parts in section and the central portion thereof broken away. Fig. 2 is an end elevation taken at the right of Fig. 1. Fig. 3 is a similar view from the left end of Fig. 1. Fig. 4 is a detail elevation of the back cutter. Fig. 5 is a detail perspective of the reversing mechanism for the workholder, and Fig. 6 is a detail elevation with parts in section of the driving connection for the back cutterknife.

Like reference-letters refer to like-parts in the several views of the drawings.

The letter A designates the base of the machine, which may be of any desired construction and configuration suitable for the purpose and has mounted thereon a carriage A, carrying the work-holder and the driving mechanism therefor. At suitable points a roller-bearing A is interposed between the base and carriage and the motion of these parts equalized by means of rack-bars A and A upon the base and carriage, respectively, adapted to mesh with a gear-wheel A disposed between the same. The base is also provided with a standard A, secured thereto at each side and provided with a nut A secured therein to feed the carriage A by means of the screw A carried thereby and threaded into the nut. This screw at the right of the machine as shown in Fig. 2 is provided with a driving-shaft B, extended rearwardly therefrom and having thereon oppositely-disposed friction-cones B, splined thereon and adapted to cooperate with a driving-cone B carried by a lever B pivotally mounted upon the base at B. This le ver may be operated by any desired connection. For instance, as herein shown, the lower end of the lever is provided with a slotted way B adapted to receive the eccen trically-disposed pin B, carried by the'pinion B mounted upon the base. This pinion is actuated from the rack-bar B extending toward the front of the machine and there connected with the operating-lever C at its lower end C. This lever is pivotally mounted at C upon the base, and the bar B is provided with tappets C thereon, by which the direction of rotation of the driving-shaft B may be automatically reversed. This reversal is accomplished by means of the fingers C and C carried by the driving-shaft and rotating therewith, as shown in Fig. 5. These fingers are adapted to cooperate with similar fingers C and C carried upon a counter-shaft C pivotally supported upon a bracket 0", extended forward from the base. This counter-shaft is provided with a lever D secured thereto, whichis pivotally'connected 'at its outer end with arm D of the pivotallymounted bell-crank lever D the opposite arm D thereof being disposed between the tappets C upon the rack-bar B". For the purpose of transferring motion from the driving-shaft B to the oppositeend of the ICC sitely disposed friction idler-pulleys E sup-I. ported 'in suitable bearings carried-by the carriage 'or by the bracket E extending This shaft at its end is 1 provided Withan adjusting-screw E,Imount- 1 ed ina threaded bearing E at the upper end of the *bracketE 'and adapted to beoperated *by a- "hand-wheel E and locked into position by the lock-nut E, mounted on said screw. 1 To drive the head-stock shaft, the belt Ffi's laterally therefrom.

provided and extends from the drivimg puliley E beneath the pulley 'E and over the pulley Fa'nd opposite drive-pulley F upon'the "shaft,jon which a suitable belt-pulley F may beprovided. (See Fig. 3.)

The Outer endyor the tail-stock spindle E I li'sino'unted in'thebracket F extended from thecarriage and'provided'withthe adjustinggpiriion F imounted on screw F and meshing withfasiinilarpinion F, mounted in'a lateral extension.F 'fr om the bracket F The driving shaft F -fo'r these pinions extends rearwardly and is provided with the frictioncdnes F9, splined thereon and supported by neansof brackets G, carriedbythe opposite standards G, extended from the base at the rearthereof and behind the 'path of travel of the carrlage. Cooperating with these cones 'i's a'driving-cone G ,'carried by the-lever G which is pii'rotally mounted at G upon the standards and connectedatits'lower end by a pivoted link G 'to a'roclvleverG,*pivotally mountedat Gdahdconnected at its opposite endGr withan dperating-rod G, pivotally connected to 't-he'lever H at'its'lower end H. Both lthe head and tail stocks are provided with vtheusua'hchncks H adj ustably mounted'inbearings H constructed and'su'pported in-the usual manner so as to be moved with thecarriage. The cone G isdriven by'belt Htifrom p ulley H p 7 The Jcutter-head is rotatably supported abovethework-holder by means of brackets Ijat' opposite ends of the machine extending butwardifrom the standards G and each-provided-with a slideway I,in which the bearingblo'cks Pare mounted, said blocks being provided withsuitable bearing-boxes to receive the shaft ends I of the-cutter head1*,as sliownin Fig. 3., These bearing-blocks I are adjusted vertically by means ofthe threaded shafts I mounted in the brackets and driven in any suitable manner- -for instance, by means of gears I at their upper ends meshing with corresponding gears 1 carried by the cross-shaft i said shaft being extended beyond one of the bearing-boxes and there provided with a suitable operating-handle 1 supported in any desired mannerforinstance, by the bracket 1 The bearingblock is clamped in its vertically-adjusted position by means of a screw 1, extending through the bracket into said block, as shown in Fig. 3. The cutter-head is driven by means of a driving-pulley J, disposed upon one end of the 'sha'ftl "thereof and provided witha beltJ,'extending therefrom over idlers J to the drivingewheel J upon the shaft J mounted in suitable standards'J at the rear of the machine.

I The standardsG areprovided with the back knife-b ar 'K,extending between the same and carrying a plurality of blades K,secured thereto in any desired manner and disposed inp arallel planesextendingdiagonally to the standards with overlapping adjacent'ends,'so as to effect an independent cut with each knife when the work-holder is brought within the path of travel thereof. This'arrangement of 'knivesobviates the long travel to produce a shearing cut extending the length of the columnor'otherlong pieceof work, asa series of shorter'knives maybe used 'to accomplish the'same work with a short travel and in a more satisfactory manner. This bar K is adjusted to reciprocate in its motion upon the standards Gbymeansof screws K suitably inounted 'therein'and provided at their upper ends with a bevel gear 3K meshing with-a similar "gear K, carried by the'crossshaft K, as show'ninFig. 1', this shaft being also provided with oppositely-disposed =friction-cones K secured thereto for the purpose. of driving the same. The driving power for these cones is"received'fromthe intermediate co'ne K carried by ashaft K, which 'is'pivotally mounted-'at its lower'end in a "bearing K and there provided with a:drivingi-gear K, adapted to mesh with a similar gear L, carried by the shaft L, which shaft isd'riven by'a pulley L thereon, over whicha drivingbelt L extends, as shown-in Fig. 2. pulley also passes over idlers L and pulley H to a suitable.driving-pulley L uponthe driving-shaft J. The shaft L also carries a pulley L, from i'which the 'belt L extends to drive the cone B hereinbefore described. The knife-bar carries at its upper portionithe bearings "L in which the shaft L- (if thecut off saws Misjournaled. These sawsaredisposed at oppositeends ofthemachinefor'the purposeofcutting off the proper length of work after the turning operation has been completed and are driven in any desired'manner-for instance, by means of the drivingpulley M up'onthe end ofthe shaft L over This ICC

which the belt M passes, this belt beingheld 1 o in position on opposite sides of the pulley M i by means of idlers M which are mounted in the frame of the saws to travel therewith in its reciprocatory movement, and thus maintain a constant driving relation between the parts. The belt M at its upper end passes over a suitable supporting-pulley M and at its lower end over a similar pulley M The shaft of the pulley M is extended, as shown at M, and there provided with a drivingpulley M to which power may be applied.

For the purpose of controlling the drivingcones for the back knife-frame and their direction of movement an operating-lever N is provided at the front of the machine and pivotally connected at its lower end N with a bar N extending tothe rear thereof, where it per portion with rack-teeth N is pivotally connected at N 3 with a bell-crank lever N, the arm N of said lever being pivotally secured to the reciprocating bar N, mounted in suitable bearings to permit a vertical movement thereof and formed at its up- Meshing with these teeth is a pinion N provided with a crankpin N extended into the slotted lower end of a pivoted lever O, the upper portion 0 of said lever being connected by a link 0 with the driving-shaft K of the cone K, so as to shift it relatively to its cooperating cones K at each side thereof.

From the foregoing description of the sev.

eral parts of the machine it will be observed that the construction and arrangement of the driving means for the several parts is such that they may be controlled by a series of le-.

vers disposed at the front of the machine adjacent to the work-holder, thereby requiring the attention of but one operator after the work is placed in position. It will be seen that the lever C controlsthe operation of the carriage supporting the work-holders, as before described, while the lever H controls the adjustment of the chuck at the tailstock. The lever N controls the elevation and depression of the back knives and the cut-off saws carried by the frame thereof, so that they may be fed up or down, as found desirable. It will be observed that the workholder is adapted to travel laterally during its rotative movement into contact with a relatively fixed rotating cutter-head which produces the most desirable results in turning columns and other large work of that character. It will also be seen that the use of a plurality of knives reduces the necessary length of travel during the cutoff operation, as before described.

Having now described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a turning-lathe, a base, acarriage mounted to travel thereon, a work-holder upon said carriage, means for rotating the work by said holder during the travel of the carriage, a back frame extended upward from said base and provided with a laterallyextending bracket, a rotating cutter-head disposed in said bracket above said holder, means for automatically feeding said carriage toward and from said back frame, and means for automatically reversing the direction of travel of said carriage.

2. In a turning-lathe, awork-hold er, means for rotating the work therein, a rotating cutter-head disposed in a horizontal plane above the holder, means for automatically feeding the work-holder transversely to its axis of rotation and beneath said head, means for reversing the direction of travel of said workholder, means for vertically adjusting said cutter-head, a frame carrying a back knife and mounted to travel in a vertical plane parallel to said cutter-head, and cut-off saws mounted upon the frame of the back knife at the opposite ends thereof.

3. In a turning-lathe, a back knife-frame mounted for reciprocation, supporting-arms carried by said frame, a shaft rotatably mounted in said arms and provided with saws at the opposite ends thereof, and means for rotating said shaft.

4. In a turning-lathe, a back knife-frame mounted for reciprocation, supporting-bearings carried by said frame, a shaft rotatably mounted in said arms and provided with saws at the opposite ends thereof, a drivingpulley upon said shaft, idlers at opposite sides of said pulley and carried by said frame, and a driving-belt carried by the machineframe and disposed between said idlers and driving-pulley.

5. In a turning lathe, vertical standards, a back knife mounted to reciprocate therein, driving-screws connected to said knife, a laterallydisposed shaft extending between the screws, opposite cones carried by said shaft, an intermediate driving-cone, cut-off saws supported upon the knife-frame, and a driving-belt for rotating said saws during the travel of said frame means for shifting said driving-cone.

6. In a turning-lathe, vertical standards, a back knife mounted to reciprocate therein, driving-screws connected to the said knife, a laterally-disposed shaft extending between the screws, opposite cones carried by said shaft, an intermediate driving-cone, a geared shaft extending from said driving-cone, means for pivotally mounting said shaft, a pivoted lever connected at its upper end to said pivoted shaft, a crank-pin connected to the lower end of said lever,- a gear carried by the shaft of said crank-pin, and means for operating said gear.

7. In a turning-lathe, vertical standards, a back knife mounted to reciprocate therein, driving-screws connected to said knife, a laterally-disposed shaft extending between the screws, opposite cones carried by said shaft, an intermediate driving-cone, a geared shaft extending from said driving-cone, means for pivotally mounting said shaft, a pivoted lever connected at its upper end to said .pivoted shaft, a crank-pin connected to the lower end of said lever, a gear carried by the shaft of said crank-pin, a reciprocating rack meshing with said gear, a controlling-lever .pivotally mountedupon the base of the machine, and connections extending between said controlling-lever and rack to reciprocate the latter.

8. In a turning-lathe, a base, a carriage mounted to travel thereon, a rotatable workholder mounted upon said carriage, a drivingshaft extending from and movable with said carriage, oppositely-disposed cones splined upon said shaft and supportedagainst longi tudinal movement therewith, an interme iate driving-cone, a pivoted lever carrying said driving-cone at one end, tappets carried by said driving-shaft, and means extending from said lever,v and disposed in the path of said tappets'to beactuated thereby.

- 9. In a turning-lathe, a base, a carriage mounted to travel thereon, a work-holder mounted upon said carriage, means for rotating said work holder a standard carried by the base and provided with a nut mounted therein, a-dfi'iring-screw carried by said carriage, a driving-shaft extending from said screw and provided with opposite cones thereon, an intermediate driving-cone mounted upon a pivoted lever, a controlling-lever mounted upon the base and provided with a rack-b ar connected therewith, a gear mounted upon the base and meshing with said bar, and, a-crank-pin carried by said gear to enga'ge aslotted end of said lever.

10. Ina turning-lathe, a base, acarriage mounted to travel thereon, a work-holder mounted upon said carriage, means for rotating said workholder a standard carriedby the base and provided with a nut mounted therein, a'driving-screw carried by said carriage, a'driving-shaft extending from said screw and provided with opposite cones thereon, an intermediate driving-cone mounted'upon a pivoted lever, a'cOntrolling-lever mounted upon the base and provided with. a rack-bar connected'therewith, a gear mount ed upon thebase and meshing with said bar, a crank-pin carriedby said gearto engage a slotted endof said lever, fingers carriedby said driving-shaft, a counter-shaft provided with cooperating fingers, a lever extending from s'aid'cOunter-shztft, and a bellcrank lever pivotally connected to said countershaft lever'and having its opposite end disposed in the path of'tappets carried by said rack-bar.

11. In a turning-lathe, a stock provided with adrivingegear thereon, a chuck-spindle carried by said stock and'longitudinally adjusted by saidg'ear, a driving-shaft'havinfg a pinion cooperating with said gear, means for producing a travel of said stock laterally of the spindle, opposite cones splined upon said shaft, and an intermediate driving-cone.

12. In a turning-lathe, a stockv rovided with a driving-gear thereon, 'a chuc r-spindle carried by said stock and longitudinally adjusted by said gear, a driving-shaft having a pinion cooperating with said gear, means for producing a travel of said stock laterally of the spindle, fopposite cones splined upon said shaft, an intermediate driving-cone, a pivoted lever carrying said driving-cone at one end, a controlling-lever mounted upon the base, and connections extending from said controlling-lever to said pivoted lever for shifting the same. I

13. In a turning-lathe, a carriage, means for driving the same, a work-holder mounted chuck of said work-holder, controlling-levers with connections to the carriage-driving and work-hOlder-chuck-adjusting shafts respectively, and means controlled'by the carriagedriving shaft for automatically reversing the travel thereof and shifting its controllinglever.

14. In a turning-lathe, a carriage, means for driving the same, a work holdermoun'ted upon said carriage, means for adjusting the chuckof said work-holder, controlling-levers mounted upon a common pivot and provided with connections to the carriage-driving and workholderchuckadjusting shafts respectively, means controlled by the carriagedriving shaft for automatically reversingthe travel thereof and shifting its controllerlever, a back knife, driving means for reciprocating the same, and a controlling-lever for said driving means mounted upon a common pivot with the before-mentioned controlling-levers.

15. In a turning-lathe, a carriage, means for driving'the same, a work-holder mounted upon said carriage, means for adjusting the chuck ofsaid workholder, controlling-levers mounted upon a common pivot andIprovided with connectionsto the carriage-driving and workholder-chuck-adjusting shafts respectively, means controlled by the carriagedriving shaft for automatically reversing the travel thereof and shifting its controllinglever, a back knife, drivingmeans for reciprocating' the same, a controlling leve'rfor said driving means mounted upon a common pivot withthe before-mentioned controllinglevers, cut-off saws supported upon theframe of said knife, and means 'for continuously driving said saws during the movement of the knife-frame.

16. In a turning-lathe, acarriage, means for driving the same, a work-holder mounted upon said carriage, means for adjustingthe chuck of said work-holder, controlling-levers lmounted upon a common frame and proupon said carriage, means for adjusting the mounted upon a common pivot and provided 'vided with connections to the carriage-driving and Work-holder-chuck-adjusting shafts respectively, means controlled by the carriage-driving shaft for automatically reversing the travel thereof and shifting the controlling-lever, a back knife, driving means for reciprocating the same, a controlling-lever for said driving means mounted upon a common pivot With the before-mentioned controlling-levers, cut-off saws supported upon the frame of the knife, means for COIltlIlll means for vertically adjusting said head I 5 While being driven.

In testimony whereof I aflix my signature in presence of tWo Witnesses.

FREDRICK NEUDORFF. Witnesses:

W. S. WHITE, THos. A. Ro Hoo 

